Hugh a



(No Model.)

H. A. CURTIN.

SECONDARY BOOK COVER.

Patented'July 7, 1891.I

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HUGH A. CURTIN, OF NEW YORK, N. Y.

SECON DARY BOOK-COVER.

SPECIFICATION forming part of LettersPatent No. 455,448, dated July 7,1891.

Application filed October 29, 1890. Serial No. 369,713. (No model.)

. handling or for protecting the contents when the book is left opencarelessly, and in books Vof this character the inost usefuladvertisements are those that are placed upon the covers.

The present invention is for subdividing the book into sections and forprotecting those sections by secondary covers or interleaves, whichcovers are used for advertising purposes.

In the drawings, Figure lis an elevation endwise of the book as open andcontaining my improved secondary covers. Fig. 2 is a similar view, inlarger size, of thecentral portion of the book; and Fig. Sis a plan Viewof a portion of the book, partly in section.

The book itself may be of any desired size or character. rlhe ordinaryleaves are represented at A, the coversat B, and thc springback at C.The secondary covers D D are made of paper or pasteboard of suitablethickness and texture and their inner edges are received between inuslinstrips 2, which are sewed or otherwise secured to the folded inlay 3,whichis preferably of thin pasteboard covered with muslin, and the saineis sewed firmly into the binding of the book, preferably during thebinding operation, and upon the outer edges of the secondarycovers D D'-there are metal strips 4, which serve the twofold purpose of weights andof strengtheningpieces for the edges of the secondary covers. It willnow be understood that if the book is opened the folded inlay andsecondary covers will tend to insure the separation of the sections ofthe book Where the secondary covers or interleaves are applied, and theweights on the edges lof the secondary covers will keep the leaves down,and these secondary covers protect the leaves of the book, and theadvertisements printed on these secondary covers are conspicuouslydisplayed. Hence these secondary covers become very advantageous f oradvertising purposes, and two or more pairs of secondary covers may beinserted vin the book to divide the saine into three or more sections.

In many places directories are supported on a desk or shelf -and theylie open to a greater or less extent, and to facilitate the opening ofthe book between the sections when they are laid out fiat upon the shelfor desk I make use of springs E, of flexible steel, riveted at theirends to the covers near the top and bottom edges thereof, so that thesesprings tend to throw the outer covers open; but they are bent by theweight of the covers when the book is closed, and there is a wire F of alength sufiicient to extend from top to bottom of the book and with theends bent at right angles to pass through the springs E, and the ends ofthe wire are riveted up. Hence this wire when the book is closed isbetween the back of the book 5 but when the book is opened out flat thiswire is drawn into the fold of the inlay by the action of the springsand aids in opening out the book between the secondary covers, and wherethere is more than one pair of secondary covers there will be a wire Fbetween each pair, and under almost all circumstances when the book isleft open the secondary covers will bc above the leaves and protect thesaine, as well as displaying the advertisements upon the sheets formingthe secondary covers.

I claim as my inventionl. The secondary covers introduced into the bodyofV the book and having metallic strips on their edges to form weights,substantially Vas set forth.

2. The combinatiomwith the book, of the folded inlay sewed into the backof the book between one section and the other, the secondary covers ofpaper or pasteboard, and the muslin strips fastened to the inner edgesof the secondary covers and-connected to..the folded inlay,substantially as set forth.

3. The combination, with the secondary covers of paper or pasteboard, ofthe folded inetallic strips connected with the outer edges, the muslinstrips connected with the inner edges, and the folded inlay to which theinuslin IOO ondary `covers are connected, of the Wire F, passing alongbetween the parts of the inlay, and the springs fastened to the coversand passing across the back at the top and bottom, and to which springsthe ends of the Wire are fastened, substantially as set forth. Signed byme this 25th day of October, 1890.

HUGH A. CURTIN. Vitnesses;

Gno. T. PINCKNEY, HAROLD SERRELL.

